(11-Aug-2020, 12:12 PM)bLoWsMokE Wrote:  I'm not sure what this means. "Looking at the apex's spectrum"

For a completely unfiltered gyro I would expect to see noise like that, if there wasn't any like that then the filters would be redundant, so that is their purpose. I have nothing else to compare it to because I haven't seen unfiltered gyro noise before, but I've seen filtered gyro's look like that, and THAT is bad.

Your filtered gyro is cleaner than Ronins and is pretty much as clean as it can possibly be. I'm actually kind of confused now because your reaction to Ronins graph implies that you are impressed with how clean the noise was on his graph.... but then on the other hand you showing pictures of your gyro looking cleaner after you turned the filters on, which implies that you already knew it would look like that....... These are conflicting implications, so I'm not quite sure what to make of it.

Hmm. I was thinking that d.ronin's apex noise graph is pre-filtered. LOL. That's why i was in awe. LOL.

I shouldn't be saying plural CAPS. oops. It';s a single capacitor across the battery leads/pads.

True. I see your point now. I think I am chasing the rabbit hole where I was thinking that pre-filtered noise have to be extremely clean before proceeding with the rest and finally having fun flying. 

Was going around this pre-filtered graph and trying to move my wires, strap them down, remount the fc, move the filters, and my next plan is puttin a capacitor to the input voltage for the FC.

Perhaps I should not chase the rabbit if the post-filtered graph is acceptable. 

(11-Aug-2020, 12:17 PM)ivanwong1989 Wrote: Hmm. I was thinking that d.ronin's apex noise graph is pre-filtered. LOL. That's why i was in awe. LOL.

I shouldn't be saying plural CAPS. oops. It';s a single capacitor across the battery leads/pads.

True. I see your point now. I think I am chasing the rabbit hole where I was thinking that pre-filtered noise have to be extremely clean before proceeding with the rest and finally having fun flying. 

Was going around this pre-filtered graph and trying to move my wires, strap them down, remount the fc, move the filters, and my next plan is puttin a capacitor to the input voltage for the FC.

Perhaps I should not chase the rabbit if the post-filtered graph is acceptable. 

Oh I see.. But yeah that's the purpose of the filters! If the noise was non existent then there would be no need for filters and we'd be able to fly with 0 latency from filters ;D

The latency the filters add is negligible though so don't worry about it.

But yeah adding the filters and seeing all that noise go away is nice ;D

That's why I kept asking if you have dynamic filtering on....... it looked like there was no filtering in those graphs..... I guess there wasn't hahaha.

How are you doing that BTW? How did you remove all filters like that? You said something like "gyro scaled"? Is that a CLI command to see just the gyro with no software filtering?

And Ronin's responses kinda sound like he was on the same page as you while I wasn't. Maybe his posts ARE unfiltered....... I'm so confused right now lolol. He's saying that you can fix it with software filtering but it won't ever be perfect....... I'm not sure I understand what he's saying there........... no one flies with zero net software filtering....... I mean... right?

(11-Aug-2020, 12:33 PM)bLoWsMokE Wrote: Oh I see.. But yeah that's the purpose of the filters! If the noise was non existent then there would be no need for filters and we'd be able to fly with 0 latency from filters ;D

The latency the filters add is negligible though so don't worry about it.

But yeah adding the filters and seeing all that noise go away is nice ;D

That's why I kept asking if you have dynamic filtering on....... it looked like there was no filtering in those graphs..... I guess there wasn't hahaha.

How are you doing that BTW? How did you remove all filters like that? You said something like "gyro scaled"? Is that a CLI command to see just the gyro with no software filtering?

And Ronin's responses kinda sound like he was on the same page as you while I wasn't. Maybe his posts ARE unfiltered....... I'm so confused right now lolol. He's saying that you can fix it with software filtering but it won't ever be perfect....... I'm not sure I understand what he's saying there........... no one flies with zero net software filtering....... I mean... right?

Yeap I had dynamic filtering turned on . 

Oh yea. the "Gyro_Scaled" thing. It's actually in betaflight blackbox section.
If I set blackbox to log "Gyro_Scaled"

and after flying, i get the blackbox files out and display them. I can display this "Gyro_Scaled" graph. =). So in my blackbox im seeing 2 traces. One is the Gyro_Scaled unfiltered, and the normal Gyro trace that is post filtered. =)


The pink line is so noisy hahaah. Then the filtered one is nice and smooth. Actually I thought the pink Gyro_Scaled unfiltered lines shouldn't be so bad. That's why i've been trying back and forth to make it go away, tweaking this that, looking at graphs, and getting frustrated, and finally posted here.... 

Sorry if I communicated badly. I'm also trying to learn hahaha. And my flying still sucks, and don't know how to tune for the life of it(following some bardwell/uavtech videos now).

(11-Aug-2020, 11:14 AM)ivanwong1989 Wrote: Hmm.. so what you mean is that it can still be flyable, but it won't be super smooth or locked on? Hmm...

No. I mean you can tune it to fly pretty well. But without addressing the raw noise issues and having to rely on filtering to mitigate them means you will be using resources that could have otherwise been freed up for even better flying.

(11-Aug-2020, 12:54 PM)ivanwong1989 Wrote: Yeap I had dynamic filtering turned on . 

Oh yea. the "Gyro_Scaled" thing. It's actually in betaflight blackbox section.
If I set blackbox to log "Gyro_Scaled"

and after flying, i get the blackbox files out and display them. I can display this "Gyro_Scaled" graph. =). So in my blackbox im seeing 2 traces. One is the Gyro_Scaled unfiltered, and the normal Gyro trace that is post filtered. =)


The pink line is so noisy hahaah. Then the filtered one is nice and smooth. Actually I thought the pink Gyro_Scaled unfiltered lines shouldn't be so bad. That's why i've been trying back and forth to make it go away, tweaking this that, looking at graphs, and getting frustrated, and finally posted here.... 

Sorry if I communicated badly. I'm also trying to learn hahaha. And my flying still sucks, and don't know how to tune for the life of it(following some bardwell/uavtech videos now).

TBH IDK what Gyro scaled is, or if that line is normal or not.

In the black box turn on the set point line with gyro roll in one graph... then setpoint with gyro pitch in another, then set point with gyro yaw in another.... then all the PIDS in another, then show me what THAT looks like from that flight.

EDIT: could you send another screen show of your filters tab in betaflight, what you sent is impossible to see. The resolution is too low so when I zoom in to make it bigger everything is just a blur.

Also I've looked at other forums and it seems the "GYRO_SCALED" line being noisy like you're showing seems to be normal. I'm not quite sure what Ronin is trying to say though.... Evey quad needs software filtering..... the less you put the better the flight characteristics, sure.... but there is always SOME filtering.